Question

subtract [2x^2+x-1] – [2x^2-2x-1]
please step by step explain ​

Answer 1

Answer:

-x

Step-by-step explanation:

[ 2x^2 + x - 1 ] – [ 2x^2 - 2x -1 ]

= 2x^2 + x - 1 - 2x^2 - 2x - 1

= 2x^2 - 2x^2 + x - 2x - 1 - 1

= -x